A:
Positive:
1 x 194557555 x 389115111 x 176870531 x 62760555 x 353741155 x 125521341 x 570551705 x 11411
Negative:
-1 x -19455755-5 x -3891151-11 x -1768705-31 x -627605-55 x -353741-155 x -125521-341 x -57055-1705 x -11411
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 19,455,755, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 19,455,755 | |
| -1 | -19,455,755 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,455,755.
Example:
1 x 19,455,755 = 19,455,755
and
-1 x -19,455,755 = 19,455,755
Notice both answers equal 19,455,755
With that explanation out of the way, let's continue. Next, we take the number 19,455,755 and divide it by 2:
19,455,755 ÷ 2 = 9,727,877.5
If the quotient is a whole number, then 2 and 9,727,877.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 19,455,755 | |
| -1 | -19,455,755 |
Now, we try dividing 19,455,755 by 3:
19,455,755 ÷ 3 = 6,485,251.6667
If the quotient is a whole number, then 3 and 6,485,251.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 19,455,755 | |
| -1 | -19,455,755 |
Let's try dividing by 4:
19,455,755 ÷ 4 = 4,863,938.75
If the quotient is a whole number, then 4 and 4,863,938.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 19,455,755 | |
| -1 | 19,455,755 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 31 | 55 | 155 | 341 | 1,705 | 11,411 | 57,055 | 125,521 | 353,741 | 627,605 | 1,768,705 | 3,891,151 | 19,455,755 |
| -1 | -5 | -11 | -31 | -55 | -155 | -341 | -1,705 | -11,411 | -57,055 | -125,521 | -353,741 | -627,605 | -1,768,705 | -3,891,151 | -19,455,755 |
Here are some more numbers to try:
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